Finding the Fourth Proportional to 421.19, 631.88 and 132.63
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Solution
The fourth proportional to 421.19, 631.88 and 132.63 is: 198.97
Step by Step Solution
- Step 1: Write the proportion equation
421.19 : 631.88 = 132.63 : x - Step 2: Convert to fraction form
421.19/631.88 = 132.63/x - Step 3: Cross multiply
421.19x = 631.88 × 132.63 - Step 4: Simplify right side
421.19x = 83,806.24 - Step 5: Solve for x
x = 83,806.24/421.19 - Step 6: Final answer
x = 198.97
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.